Engineering, 13.12.2019 00:31 Fetty1738

Three ventilation fans are installed in an industrial area. the produced sound pressure levels are 86 db, 90db, and 85 db for fan 1, fan 2, and fan 3 respectively. if all three are working at the same time what would be the sound pressure level?
is the sound levels accepted according to osha standard for 8 hr exposure?
o in the range of 88db -90 db / accepted
o in the range of 88db -90 db / not accepted
o in the range of 90 db-93 db / accepted
o in the range of 90 db-93 db /not accepted

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Three ventilation fans are installed in an industrial area. the produced sound pressure levels are 8...